Wiring protection – Rockwell Automation 1760-xxxx Pico Controller User Manual User Manual
Page 35
Publication 1760-UM001D-EN-P - September 2005
Installation 2-11
1760-IB12XOB8 Expansion Module
1760-L12DWD
The dc controllers are protected against polarity reversal. To ensure
that the unit works correctly, ensure that the polarity of each terminal
is correct.
Wiring Protection
Both AC and DC versions require wiring protection (F1) rated for at
least 1 A (slow).
When the unit is powered on for the first time, the power supply
circuit draws a larger surge current than usual. Use an appropriate
device for switching on the incoming power and do not use any reed
relay contacts or proximity switches.
NC
NC
R2
R3
R4
R5
R6
R7
R8
R1
R9 R10 R11 R12 +24V
24V dc
Inputs x 24V dc
COM
0V dc
+24V dc
F1
12V dc
+12 V COM
I2
I3
I4
I5
I6
I7
I8
I1
Inputs x 12V dc
0V
F1
+12V dc
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